Apparatus and method for winding a paper web and equipment therefor for controlling nip load
First Claim
1. A winding apparatus for winding a paper web, comprising:
- a rotatably mounted reel spool onto which the paper web is wound to form a roll of paper;
a support member forming a nip with the roll of paper;
an actuator configured to control the distance between the support member and the roll of paper; and
a measuring and controlling equipment comprising;
a light-emitting member arranged to illuminate the roll of paper by light providing a line on the cylindrical surface of the roll of paper;
a receptive system arranged to depict the line; and
a control unit connected to the receptive system and arranged to analyze the depicted line in order to calculate the distance between the roll of paper and the support member and send a position-correcting signal to said actuator when the distance calculated deviates from a predetermined distance.
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Accused Products
Abstract
A winding apparatus for winding a paper web, comprising a reel spool onto which the web is wound to form a paper roll, a support member forming a nip with the paper roll, and an actuator mounted at the support member or reel spool to control the distance therebetween. According to the invention the apparatus has a measuring and controlling equipment comprising a light-emitting member to illuminate the paper roll by light providing a line on the cylindrical surface of the paper roll, a receptive system arranged to depict the line, and a control unit connected to the receptive system and arranged to analyze the depicted line in order to calculate the distance between the paper roll and the support member and send a position-correcting signal to the actuator when the distance calculated deviates from a predetermined distance. The invention also relates to such a measuring and controlling equipment and a method for controlling the distance between the paper roll and the support member.
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Citations
57 Claims
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1. A winding apparatus for winding a paper web, comprising:
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a rotatably mounted reel spool onto which the paper web is wound to form a roll of paper;
a support member forming a nip with the roll of paper;
an actuator configured to control the distance between the support member and the roll of paper; and
a measuring and controlling equipment comprising;
a light-emitting member arranged to illuminate the roll of paper by light providing a line on the cylindrical surface of the roll of paper;
a receptive system arranged to depict the line; and
a control unit connected to the receptive system and arranged to analyze the depicted line in order to calculate the distance between the roll of paper and the support member and send a position-correcting signal to said actuator when the distance calculated deviates from a predetermined distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9-14. -14. (canceled)
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15. A method for winding a paper web, comprising:
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rotatably mounting a reel spool onto which the paper web is to be wound to form a roll of paper;
mounting a support member forming a nip with the roll of paper;
mounting an actuator configured to control the distance between the support member and the roll of paper;
illuminating the roll of paper by light from a light-emitting member and thereby providing a line on its cylindrical surface;
depicting the line by a receptive system;
analyzing the line by a control unit connected to the receptive system;
calculating by the control unit a distance between the roll of paper and the support member; and
sending a position-correcting signal to said actuator when the calculated distance deviates from a predetermined distance. - View Dependent Claims (17, 18, 19, 20, 21)
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16. (canceled)
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22-35. -35. (canceled)
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36. A winding apparatus for a paper web, the apparatus comprising:
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a rotatable reel spool configured to receive the web thereon to form a paper roll;
a support member adjacent to the growing paper roll, the support member and the growing paper roll defining a nip therebetween;
an actuator configured to control a nip load between the growing paper roll and the support member;
a light emitting member arranged apart from the support member and configured to emit a light pattern onto a portion of the growing paper roll;
a light detection device configured to receive a reflection of the light pattern from the growing paper roll; and
a control unit in communication with the light detection device and configured to determine a value representative of the nip load between the growing paper roll and the support member based on the reflection of the light pattern from the growing paper roll, wherein the control unit is configured to communicate with the actuator to provide a desired nip load between the growing paper roll and the support member by moving the actuator. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 48, 49)
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44-47. -47. (canceled)
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50-51. -51. (canceled)
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52. A method of controlling a nip load between a growing roll of paper and a support member, the method comprising:
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rotating a reel spool to receive a web of paper thereon to form the growing paper roll, the growing paper roll defining a nip with the support member;
emitting a light pattern from a position apart from the support member onto a surface of the growing paper roll;
receiving a reflection of the light pattern from the growing paper roll;
determining a value representative of a nip load between the growing paper roll and the support member according to the reflection of the light pattern; and
adjusting the relative distance between the growing paper roll and the support member to control the nip load. - View Dependent Claims (53, 54, 55, 56)
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57-61. -61. (canceled)
Specification